Method for determining the instantaneous frequency and phase of a periodic signal

a periodic signal and instantaneous frequency technology, applied in the field ofsignal processing, can solve the problems of difficult implementation of current techniques in real-time applications, and achieve the effect of low processor load and sufficient reactivity

Active Publication Date: 2021-11-09
CONTINENTAL AUTOMOTIVE FRANCE +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Benefits of technology

[0013]Therefore a need exists to allow real-time estimation of the frequency and of the phase of a periodic signal acquired by means of a sensor with an acceptable level of precision, a low processor load, and sufficient reactivity, especially so as to undertake, for example, fast location of the pressure sensors of a vehicle, for example by way of a signal acquired by means of a pressure sensor.

Problems solved by technology

These current techniques are difficult to implement for real-time applications, since they require significant computational loads and / or significant reactivity, which are unsuited to the dynamic variation of the characteristics of the pressure sensor signal.

Method used

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  • Method for determining the instantaneous frequency and phase of a periodic signal
  • Method for determining the instantaneous frequency and phase of a periodic signal
  • Method for determining the instantaneous frequency and phase of a periodic signal

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Embodiment Construction

[0051]An aspect of the invention relates more generally to a method for determining the instantaneous frequency and the instantaneous phase of a periodic signal acquired by means of a sensor of an automotive vehicle.

[0052]A mode of implementation of an aspect of the invention, using said method for determining the instantaneous frequency and the instantaneous phase of a periodic signal, relates to a method for locating a pressure sensor in a system for monitoring the pressure of the tires of the wheels of a vehicle. This method is implemented by a tire pressure sensor location module.

[0053]A system for monitoring the pressure of the tires of the wheels 1-4 of a vehicle V has been represented in FIG. 1.

[0054]The monitoring system comprises a plurality of sensor modules 5-8. A sensor module 5-8 is associated with each wheel 1-4, and for example fastened on the rim of said wheel so as to be positioned inside the casing of the tire.

[0055]Each of the sensor modules 5-8 integrates sensors...

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Abstract

A method for determining the instantaneous frequency and phase of a periodic signal includes: acquiring a periodic signal characteristic of the frequency to be determined and a particular point of which is characteristic of a reference of the phase of the signal; identifying, by optimization, a reference sequence in at least one consecutive portion of the signal; determining a temporal evolution of the frequency of the signal by computing a function of the lag between the identification of the reference sequence in at least one consecutive portion of the signal; determining an instant corresponding to a point characteristic of a reference of the phase of the signal in the course of the period of the signal, and deducing therefrom the temporal evolution of the frequency, the instantaneous phase of the signal with respect to the point characteristic of phase reference.

Description

CROSS REFERENCE TO RELATED APPLICATIONS[0001]This application is the U.S. National Phase Application of PCT International Application No. PCT / EP2018 / 076011, filed Sep. 25, 2018, which claims priority to French Patent Application No. 1758878, filed Sep. 26, 2017, the contents of such applications being incorporated by reference herein.FIELD OF THE INVENTION[0002]The invention relates to the field of signal processing, especially in the field of automotive vehicles.[0003]More precisely, the invention relates to a method for determining the instantaneous frequency and the instantaneous phase of a periodic signal acquired by means of a vehicle sensor.BACKGROUND OF THE INVENTION[0004]By virtue of the system for checking the pressure of the tires (TPMS), manual pressure checks are no longer necessary, the driver being informed in real time when the pressure of one or more tires is unsuitable.[0005]So-called direct TPMS measures the pressure of the tires by pressure sensors installed direc...

Claims

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Application Information

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Patent Type & Authority Patents(United States)
IPC IPC(8): B60C23/04G01P3/44G01L17/00
CPCG01P3/44B60C23/041B60C23/045B60C23/0416G01L17/00
Inventor PLANCKE, SÉBASTIEN
Owner CONTINENTAL AUTOMOTIVE FRANCE
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